Agentsop Aider
agentsope/SkillAlchemy
SOP for terminal-based, git-native AI pair programming with Aider (git work-tree + tree-sitter repo-map + edit-format + human-in-loop REPL).
Find files that historically co-change with a target symbol or file, ranked by co-occurrence across git episodes.
Install Memtrace Cochange
$ npx skills add syncable-dev/memtrace-public --skill memtrace-cochange -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install syncable-dev/memtrace-public memtrace-cochange --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/syncable-dev/memtrace-public.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/memtrace-skills/skills/memtrace-cochange .claude/skills/memtrace-cochange && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "memtrace-cochange" agent skill from https://github.com/syncable-dev/memtrace-public/tree/main/plugins/memtrace-skills/skills/memtrace-cochange into .claude/skills/memtrace-cochange/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "memtrace-cochange", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/syncable-dev/memtrace-public/tree/main/plugins/memtrace-skills/skills/memtrace-cochangeType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add syncable-dev/memtrace-public --skill memtrace-cochange -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install syncable-dev/memtrace-public memtrace-cochange --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/syncable-dev/memtrace-public.git skills-src && mkdir -p .agents/skills && cp -r skills-src/plugins/memtrace-skills/skills/memtrace-cochange .agents/skills/memtrace-cochange && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "memtrace-cochange" agent skill from https://github.com/syncable-dev/memtrace-public/tree/main/plugins/memtrace-skills/skills/memtrace-cochange into .agents/skills/memtrace-cochange/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "memtrace-cochange", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add syncable-dev/memtrace-public --skill memtrace-cochange -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install syncable-dev/memtrace-public memtrace-cochange --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/syncable-dev/memtrace-public.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/plugins/memtrace-skills/skills/memtrace-cochange .cursor/skills/memtrace-cochange && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "memtrace-cochange" agent skill from https://github.com/syncable-dev/memtrace-public/tree/main/plugins/memtrace-skills/skills/memtrace-cochange into .cursor/skills/memtrace-cochange/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "memtrace-cochange", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/syncable-dev/memtrace-public.git --path plugins/memtrace-skills/skills/memtrace-cochange--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add syncable-dev/memtrace-public --skill memtrace-cochange -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install syncable-dev/memtrace-public memtrace-cochange --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/syncable-dev/memtrace-public.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/plugins/memtrace-skills/skills/memtrace-cochange .gemini/skills/memtrace-cochange && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "memtrace-cochange" agent skill from https://github.com/syncable-dev/memtrace-public/tree/main/plugins/memtrace-skills/skills/memtrace-cochange into .gemini/skills/memtrace-cochange/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "memtrace-cochange", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install syncable-dev/memtrace-public memtrace-cochangeInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add syncable-dev/memtrace-public --skill memtrace-cochange -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/syncable-dev/memtrace-public.git skills-src && mkdir -p .github/skills && cp -r skills-src/plugins/memtrace-skills/skills/memtrace-cochange .github/skills/memtrace-cochange && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "memtrace-cochange" agent skill from https://github.com/syncable-dev/memtrace-public/tree/main/plugins/memtrace-skills/skills/memtrace-cochange into .github/skills/memtrace-cochange/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "memtrace-cochange", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add syncable-dev/memtrace-public --skill memtrace-cochange -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install syncable-dev/memtrace-public memtrace-cochange --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/syncable-dev/memtrace-public.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/plugins/memtrace-skills/skills/memtrace-cochange .opencode/skills/memtrace-cochange && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "memtrace-cochange" agent skill from https://github.com/syncable-dev/memtrace-public/tree/main/plugins/memtrace-skills/skills/memtrace-cochange into .opencode/skills/memtrace-cochange/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "memtrace-cochange", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
memtrace-cochange- GitHub stars
- 486
- Token cost
- ~961 tokens
- SKILL.md length
- 377 words
- Files
- 1
- Skills in repo
- 27
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Find files that historically co-change with a target symbol or file, ranked by co-occurrence across git episodes.
- Works in 4 steps: Identify the target → Call get_cochange_context → Interpret results → …
- The user asks about historical coupling
- SKILL.md covers Overview, Required parameters, Output and Steps, plus 2 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Memtrace Cochange is an agent skill from syncable-dev/memtrace-public. Find files that historically co-change with a target symbol or file, ranked by co-occurrence across git episodes. Use when the user asks about historical coupling, co-change, what changes with this, hidden dependencies, or what else needs to move for source code. Do not use git log, git diff, Grep, or manual file search to correlate changes; Memtrace queries co-change and temporal graph data directly.
Its SKILL.md is about 960 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Development, covering Codebase onboarding and Git workflow. It works with Git. The repository describes itself as: Structural memory for AI coding agents. Bi-temporal graph, MCP-native, zero LLM calls. Cursor · Claude Code · Codex · DeepSeek Harness · Hermes · VS Code · Windsurf.
When your agent uses it
- The user asks about historical coupling
- What changes with this
- Hidden dependencies
- What else needs to move for source code
Example prompts
- “/memtrace-cochange”
Workflow steps
4 steps, taken from the step headings in SKILL.md.
- Identify the target
- Call get_cochange_context
- Interpret results
- Cross-reference with call graph
What it can do on your machine
Read from SKILL.md and the folder at commit 3a3084d. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are json).
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Memtrace Cochange loads about 961 tokens when it runs. Until then it costs about 106 tokens; SKILL.md has 377 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 377 words (~961 tokens).
“Find files that historically co-change with a target symbol or file path — ranked by co-occurrence frequency across git episodes. Surfaces behavioral coupling the static call graph cannot see.”
- name
- memtrace-cochange
Files
Just SKILL.md in plugins/memtrace-skills/skills/memtrace-cochange of syncable-dev/memtrace-public.
Open the folder on GitHubat commit 3a3084d
Compare with similar skills
Memtrace Cochange next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Memtrace Cochange this skillsyncable-dev/memtrace-public | 486 | — | ~961 | Automated safety check: Pass | Custom licence | |
| Agentsop Aideragentsope/SkillAlchemy | 457 | — | ~3.5k | Automated safety check: Pass | MIT | |
| Local File and Code Searchtaxueseek/argo | 184 | — | ~1.1k | Automated safety check: Pass | MIT | |
| basemind CLI Codebase NavigatorGoldziher/basemind | 106 | — | ~2k | Automated safety check: Pass | MIT | |
| Codewhale Contributor Onboardingcodewhale-hq/Codewhale | 41k | — | ~1.3k | Automated safety check: Pass | MIT | |
| Git Project Statusespennilsen/pi | 122 | — | ~4.4k | Automated safety check: Notes | MIT |
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Drives the basemind code-intelligence tool from the command line for symbol search, callers, git history and blame, document search and web crawling, sharing its cache with the MCP server.
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Reports whether a fresh Codewhale checkout is current, builds and passes its tests, and what changed since the contributor was last here, without touching the working tree.
Git Project Status
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Walks the last step of a branch: confirm tests pass, detect the git environment, ask how to integrate, carry out your choice and clean up the worktree.
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Related
Works with
Categories
Questions about Memtrace Cochange
What does Memtrace Cochange do?
Find files that historically co-change with a target symbol or file, ranked by co-occurrence across git episodes. Memtrace Cochange is an agent skill from syncable-dev/memtrace-public. Find files that historically co-change with a target symbol or file, ranked by co-occurrence across git episodes.
When should I use Memtrace Cochange?
Memtrace Cochange fits situations like: the user asks about historical coupling; what changes with this; hidden dependencies; what else needs to move for source code.
How do I install Memtrace Cochange in Claude Code?
Run `npx skills add syncable-dev/memtrace-public --skill memtrace-cochange -a claude-code`. Or copy the skill folder (plugins/memtrace-skills/skills/memtrace-cochange in syncable-dev/memtrace-public) into .claude/skills/memtrace-cochange in your project. Claude Code loads it when a task matches its description.
How do I install Memtrace Cochange in Codex?
Run `npx skills add syncable-dev/memtrace-public --skill memtrace-cochange -a codex`. Or copy the skill folder (plugins/memtrace-skills/skills/memtrace-cochange in syncable-dev/memtrace-public) into .agents/skills/memtrace-cochange in your project. Codex loads it when a task matches its description.
Can I use Memtrace Cochange in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add syncable-dev/memtrace-public --skill memtrace-cochange -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/memtrace-cochange, .gemini/skills/memtrace-cochange, .github/skills/memtrace-cochange and .opencode/skills/memtrace-cochange in your project.
What does Memtrace Cochange need to run?
SKILL.md names no scripts, command-line tools or credentials: Memtrace Cochange is instructions for the agent only.
Does Memtrace Cochange access the network?
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Is Memtrace Cochange safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Memtrace Cochange use?
Memtrace Cochange has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Memtrace Cochange use?
About 961 tokens (SKILL.md is roughly 3.8k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
What are the alternatives to Memtrace Cochange?
Skills that share tags, products or a category with Memtrace Cochange: Agentsop Aider (agentsope/SkillAlchemy, 457 stars), Local File and Code Search (taxueseek/argo, 184 stars), basemind CLI Codebase Navigator (Goldziher/basemind, 106 stars) and Codewhale Contributor Onboarding (codewhale-hq/Codewhale, 41k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Memtrace Cochange?
syncable-dev (a GitHub organization) maintains it in syncable-dev/memtrace-public, which has 486 GitHub stars. The repository holds 27 skills in this directory. The repository was last updated on October 6, 2026.
Source: syncable-dev/memtrace-public on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.